Every year on the third Friday in May, pizza is dedicated to those who can't get enough of it. National Pizza Party Day is on Friday, May 20th, and while your favorite local restaurants are likely offering deals and specials to celebrate, this annual tradition should also serve as inspiration to travel to uncover even more great pizza.

While there are great pies to be had from coast to coast, passionate pizza eaters in search of their next favorite slice should look no further than these five U.S. cities.

VERTISING

The Best Pizza in Phoenix

Visitors to the Valley of the Sun will find plenty of heat when they visit some of the best pizzerias in the city. The Parlor in Midtown, which has been voted the number one pizza in the state of Arizona, is an absolute must for delicious wood-fired pies, but Phoenix has a robust selection of worthwhile pizza joints that many swear by.

A list of some of the best pizza places in the valley would not be complete without mentioning other places such as Forno 301 and Ziggys Magic Pizza Shop.

The Best New York City Pizza

Chef cutting focaccia bread pizza in New York City's Chelsea Market
Chef cutting focaccia bread pizza in New York City's Chelsea Market. (photo via ablokhin/iStock Editorial/Getty Images Plus)

NYC pizza is second to none, and pizzerias all over the country advertise it for good reason. The five boroughs are home to only the most passionate, creative and perfect-seeking of dough-tossers, sauce-spreaders and cheese-sprinklers, so trying to rank the best spots is a fool's errand.

Visitors should keep an open mind as they explore to see where the longest lines are. John's of Bleecker Street is a coal-fired brick oven pizza that dates back to 1929, Best Pizza in Brooklyn is a classic NYC slice wood-fired, and Joe's Pizza is a hit with tourists.

Detroit's Greatest Pizza Spots

Pizza lovers around the world are familiar with Domino's and Little Caesars, both of which are based in Detroit. Unless you have an endless appetite, you should not go to Detroit unless you can find better pizza at places like Buddy's Pizza, Loui's Pizza and Tomatoes Apizza.

Buddy's is considered the birthplace of the beloved Detroit-style pizza known for its ideal blend of crisp and dense, and Loui's is another great example of this style.

Top Pizza Places in Chicago

Deep-dish pizza from Lou Malnati’s Pizzeria in Chicago
Deep-dish pizza from Lou Malnati’s Pizzeria in Chicago. (Photo via Lou Malnati’s Pizzeria)

It is true that Chicago produces amazing deep-dish pizza, but that is not the only thing that can be found in this pizza-crazed Midwest city. Visitors can find tavern or bar-style pizza with ultra-thin crust and cut into tiny squares that are easy to share and enjoy while you tour the town.

Pequod's should be your first stop if you want a delicious deep dish. Lou Malnati's and Giordano's are both excellent Chicago eateries. If you're looking for a thin-crust experience that's sure to have your taste buds jumping, check out Nick's on Chicago's South Side or Paulie Gee's for a heavenly wood-fired pizza.

New Haven's Premier Pizzas

Even if New Haven can't compete with big cities like New York and Chicago simply in terms of the volume of pizza available, Connecticut's Elm City will overwhelm pizza lovers (in the best way possible) when it comes to quality.

At Modern Apizza, diners can choose from a variety of outside-the-box pies, including mashed potato and roasted corn off the cob. The latter dates back to 1934 and serves up delicious thin-crust pizzas in a brick oven.